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package vendor_openexr
import "core:c"
@(link_prefix="exr_", default_calling_convention="c")
foreign lib {
/** Computes a buffer that will be large enough to hold the compressed
* data. This may include some extra padding for headers / scratch */
compress_max_buffer_size :: proc(in_bytes: c.size_t) -> c.size_t ---
/** Compresses a buffer using a zlib style compression.
*
* If the level is -1, will use the default compression set to the library
* \ref set_default_zip_compression_level
* data. This may include some extra padding for headers / scratch */
compress_buffer :: proc(
ctxt: const_context_t,
level: c.int,
in_: rawptr,
in_bytes: c.size_t,
out: rawptr,
out_bytes_avail: c.size_t,
actual_out: ^c.size_t) -> result_t ---
/** Decompresses a buffer using a zlib style compression. */
uncompress_buffer :: proc(
ctxt: const_context_t,
in_: rawptr,
in_bytes: c.size_t,
out: rawptr,
out_bytes_avail: c.size_t,
actual_out: ^c.size_t) -> result_t ---
/** Apply simple run length encoding and put in the output buffer. */
rle_compress_buffer :: proc(
in_bytes: c.size_t,
in_: rawptr,
out: rawptr,
out_bytes_avail: c.size_t) -> c.size_t ---
/** Decode run length encoding and put in the output buffer. */
rle_uncompress_buffer :: proc(
in_bytes: c.size_t,
max_len: c.size_t,
in_: rawptr,
out: rawptr) -> c.size_t ---
/** Routine to query the lines required per chunk to compress with the
* specified method.
*
* This is only meaningful for scanline encodings, tiled
* representations have a different interpretation of this.
*
* These are constant values, this function returns -1 if the compression
* type is unknown.
*/
compression_lines_per_chunk :: proc(comptype: compression_t) -> c.int ---
/** Exposes a method to apply compression to a chunk of data.
*
* This can be useful for inheriting default behavior of the
* compression stage of an encoding pipeline, or other helper classes
* to expose compression.
*
* NB: As implied, this function will be used during a normal encode
* and write operation but can be used directly with a temporary
* context (i.e. not running the full encode pipeline).
*/
compress_chunk :: proc(encode_state: ^encode_pipeline_t) -> result_t ---
/** Exposes a method to decompress a chunk of data.
*
* This can be useful for inheriting default behavior of the
* uncompression stage of an decoding pipeline, or other helper classes
* to expose compress / uncompress operations.
*
* NB: This function will be used during a normal read and decode
* operation but can be used directly with a temporary context (i.e.
* not running the full decode pipeline).
*/
uncompress_chunk :: proc(decode_state: ^decode_pipeline_t) -> result_t ---
}
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